Oxy substituted 2,3 oxy methyl quinoxalines
Abstract
Abstract A photographic, light-sensitive material for the silver dye bleach process, which comprises on a carrier, in at least one layer as dye bleaching catalyst a quinoxaline of the formula WHEREIN D is oxygen, halogen, OR -O-R3, E hydrogen, nitro, -O-R4 or -COO-R4, R1 and R2 each representing hydrogen, acyl or lower alkyl and R3 and R4 each representing hydrogen or lower alkyl, or wherein D and E in vicinal position form together a residue of formula -O-(CH2)m-O-, wherein m is 1 or 2, X and X'' each represent one atom of an element of the fourth to seventh main group of the periodic system, A and A'' each represent hydrogen or an organic residue, and n and n'' each represent the group number of the atom X or X'', so that in so for as n or n'' is 4 or 5 the individual residues A or A'' are the same or different as well as new quinoxalines of formula (1) wherein in case X is oxygen or halogen, one of D and E is different from hydrogen are disclosed.
Inventors
- 👤 Hans-Peter Schlunke
- 👤 Christian Egli
Bibliographic Details
Claims Analysis
Total Claims: 8References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
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